Return to the Annuals Forum
| Post a Follow-Up
How long is the bloom period for Cosmos?
| | |
Posted by janie58 5 (My Page) on Thu, Aug 13, 09 at 20:44
| This spring was the first time I planted cosmos. They are now about 3 feet tall and one is flowering so far. I don't see any other buds on this plant or any of the others. Are there multiple flowers on a stem? When does flowering real get going and how long does it usually last? I really don't know much about this annual. Any help would be appreciated. Thanks |
Follow-Up Postings:
RE: How long is the bloom period for Cosmos?
| | |
| I have volunteers for the second year from Sonata Pink. One group of three bloomed one month. Others keep coming up and will keep the bloom going until frost. Some are reverting to taller plants, so I will buy fresh seed next year. They are short-day plants so bloom later in the season than some annuals. |
RE: How long is the bloom period for Cosmos?
| | |
| I had one last year grow eight feet tall and never bloomed. |
RE: How long is the bloom period for Cosmos?
| | |
| Cosmos does not like rich soil or it will grow too many leaves at the expense of blooms. Don't feed it much. Just water. It'll will bloom for a long time. |
RE: How long is the bloom period for Cosmos?
| | |
| true, I planted my seeds in clay, very little fertilizer when they started to get about 1ft tall, and made sure to cut them to encourage more flowers; they are now about 6ft tall. I just need to know what to do with them at the end of the season ? |
RE: How long is the bloom period for Cosmos?
| | |
| Cosmos do best when kept deadheaded, and some varieties will go from mid-summer (Tetra Versailles Red comes to mind) until frost with no problems. I have a bed that I refresh mid-season with Bright Lights Cosmos, and they go and go and go right up til frost. Definitely have to keep deadheaded so they don't poop out on you. Oh, and rich soil is a YMMV thing, as I had Dwarf Sensations in a new compost-filled bed one year, and got fantastic results. Again, deadhead often. End of season: chop into small pieces, and bury them in place, or compost them. |
RE: How long is the bloom period for Cosmos?
| | |
| I just yanked out my Cosmos! I am 1 mile from the Iowa border in Missouri. I planted mine from seed in pretty good soil. They fell forward in my West facing garden and grew over 3 feet tall with stalks at least 1 inch thick! They were falling over suffocating some salvia and were looking very messy. I hated to take them out because they were blooming beautifully and have been for over a month. I will definitely plant them next year but in a different spot! |
RE: How long is the bloom period for Cosmos?
| | |
- Posted by mxk3 z5b/6 MI (My Page) on
Thu, Sep 24, 09 at 12:02
| This was my first year with Cosmos. They were okay, but nothing stupendous. They bloomed all season (and still blooming), but I did deadhead when I remembered to. I think the problem is I didn't like them in the spot I had them (the combination with other plants), but I would grow them again in another location, very cheerful and can take cr*ppy soil. |
RE: How long is the bloom period for Cosmos?
| | |
| I mentioned up-thread that last year I had some Cosmos that grew eight feet tall and never bloomed.** This year I had three more seed from that batch. I got two tall plants. When they got about six feet I cut one off at about three feet. Both started blooming when we had a couple of weeks of cool days and the shorter plant that had been cut off has more blooms. **Poor desert sand, not a nitrogen excess problem. |
RE: How long is the bloom period for Cosmos?
| | |
| Mine bloomed up until heavy frost, about a week ago. They do have to be tied up or staked however. I have collected a LOT of seed this year and plan to seed an empty wild field by the road with them. |
Here is a link that might be useful: My country blog
RE: How long is the bloom period for Cosmos?
| | |
need to share for those who are finding they aren't sure if they like cosmos or not. I had the tall ones, and while pretty in bloom, they were tall, and weedy looking most of the season. Not to my liking.
I went in search of different varieties, and was THRILLED to find shorter ones that I really enjoy.
THIS year I am INCREDIBLY THRILLED to have chosen these from Swallowtail Garden Seeds: Sonata Carmine.
They are a little over a foot tall in this compost-enriched space, and kept deadheaded religiously. The color was fabulous, and I'm loving this large bloom, short plant which is well-branched and blanketing this bed in late-season color! I didn't have enough to do the whole bed this year, so supplemented the front with Bright Lights that I've used in previous years (just in case I didn't like the Carmine, I put them along the back of the bed). I loved the Carmine/Orange combination, and will use it again next year, being sure to mix them well. LOOKIE! 
|
Post a Follow-Up
Please Note: Only registered members are able to post messages to this forum. If you are a member, please log in. If you aren't yet a member, join now!
Return to the Annuals Forum
|
|
|
